CORTINA D’AMPEZZO, Italy — Laura Dwyer doesn’t need a sticky note anymore. Her ritual reminder as she takes the ice is coded in a thin chain around her neck and ingrained in her thoughts. What started as a custom at a camp last summer when someone posed the question, “Why aren’t you more confident?” has evolved into a mantra for the first-time Paralympian wheelchair curler. A Midwesterner through and through, Dwyer nodded her head, deferring to the idea that too much confidence could be perceive